I remember before (and at least partially during) Cataclysm, a Mage's Polymorph pulled aggro of all enemy NPCs nearby the polymorphed NPC. Either during Cataclysm or after, Polymorphed was changed to no longer aggro nearby enemy NPCs. I can't find when this change was implemented, however.
Which patch/hotfix implemented this change?
Best Answer
This change was made in patch 4.2.0: